Reconstruct STM32 SVD files from CMSIS headers

[salkinium]

Reconstructs SVD files for all STM32 devices from the CMSIS device headers, which are compiled and therefore more accurate than the ST SVD files.

• Extracts macro values and structure layouts by cross-compiling the headers with arm-none-eabi-gcc (with caching).
• Matches the bit field macros to the structure members, covering 97.4% of all bit field macros.
• Uses the CubeHAL sources to pair registers with bit field macros, restrict bit fields per instance via the IS_*_INSTANCE macros and add enumerated values.
• Adds interrupts, descriptions and alternate registers for overlapping bit fields.
• Optionally compares the result with the ST SVD files and writes a report of the differences.
• Publishes the SVD files on the homepage with the SVD Explorer and attaches them to releases as svd-archive.zip.
• Adds a CI workflow that generates all SVD files.

The first two commits fix CI failures that already exist on main: the knowledge graph model still unpacked the old CubeMX peripheral modules, and the Ruff action installed a newer Ruff that reports 352 issues in unrelated files.